Arianna and Alessia are playing with Barbie doll.
"Ehi, girls, what are you doing?"; Arianna "You know, we are two mothers!"

"Arianna, what does say Niki?" (our cat)
"Nothing"
"Why?"
"Beecause shee's a cat"

Daddy arrives atto bedroom where Alessia and Arianna are laying on the double bed:
"Stop" Both of you to sleep in you room!"
"But has he already finished to eat?" says Ary to Mommy
"He'd probably have eaten little"
And Arianna reply "So next time cook to him more food"

"I can speak english" says Alessia
"Me too" answers Ary
"No, you don't"
"Yes I do"
"O.K.: wyoomeejeetwain. What have I said?"
"You said: wyoomeejeetwain!"

Daddy, when it's late at night is always screeming: "Hurry up Alessia, put on your pyjama"
Monica, a cousin of the theirs visiting for the night "Come on Arianna, put on your pyjama too"
Arianna: "But he told it to Alesssiaaaaa!"

After the nth time at the hospital Arianna ask to Dad:
"When do we go back home, daddy? Because I'd have breaken my balls"

Alessia ask to Daddy: "Do Giulio ride well his bicycle?"
"Yes, very well"
"No problem, I'm strong swimming"
"Sure, everyone has his specialty"
Arianna to her mother: "Mommy, I'm lovely!"

Arianna, before to fall asleep: "Alessia, listen how it's raining!"
"Ary, it's the refrigerator"

Unfortunately, there could be more "famous sentences" but some of them are plays upon words and are untranslatable in english.